This strong-scented, aromatic, perennial grows in rich, moist woods, and bears lemon-scented, light yellow flowers, which blossom from July to October. The familiar oil of Citronella, used so extensively for scenting soaps and as a mosquito lotion, is produced by an altogether different species, which grows in Ceylon. The Horse-balm has a stout, branching stem and grows from two to five feet tall. The coarsely toothed, pointed-oval or oblong leaves are either narrowed or heart-shaped at the base, and the lower ones are larger and slender stemmed. They are usually in pairs. The numerous flowers are arranged in loosely spreading and branching terminal clusters. Four of the five lobes of the bell-shaped corolla are nearly equal, and the fifth, which is much larger, and has a finely fringed edge, protrudes like the drooping lip of an Orchid. Two anther-bearing stamens and the pistil extend far beyond the corolla. This plant is found from Maine and Ontario to Wisconsin and south to Florida and Kansas.